jpanel

I have a JFrame containing 3 JPanels; Options, menu, canvas. In options there are a number of JButtons representing shapes. The aim is to click on the JButton of a shape e.g. rectangle, then click anywhere on the canvas and the shape will be drawn there. For some reason, the shape does not always get drawn, it is only drawn when I click somewhere in the top left area of the canvas. Also the shape seems to randomly change size depending on where I click. Here are some of my code snippets, it's probably a small error but I just can't seem to find it. Shape: public class Shape extends JPanel {

I've got a Problem: In my Java application I've got an AWT Component (cannot change that one) that streams and shows an avi-file. Now I want to draw upon this movie and thought about putting a transparent JPanel above it and draw on that one. This does not work since I either see the avi-stream or the drawn lines but not both. I read somewhere that AWT does not support transparency of components - but the panel is a JPanel which is able to do so. Can someone please help me with this one - thanks in advance. The Mixing Light and Heavyweight Components article explains how this is handled only

Here's my simple code. I don't really know how to add a drawn oval to a JPanel . I did some paintings before, but I have never used the constructor so I don't have an idea. public class Buffer extends JPanel{ public JFrame frame; public JPanel panel; public Buffer(){ frame=new JFrame(); panel=new JPanel(); panel.setSize(500,500); panel.setBackground(Color.red); frame.setSize(500,500); frame.setVisible(true); frame.add(panel); } public void paintComponent(Graphics g){ super.paintComponents(g); g.fillOval(20,20,20,20); } public static void main(String args[]){ new Buffer(); } } The basic

I am trying to create a BufferedImage from a JPanel, without using a JFrame. Yesterday, I was finally able to get the image to appear with help from this community (see below), but now I'm having some layout trouble. All of the components on the BufferedImage begin drawing at 0,0, instead of following the layout manager. Does anyone know of a solution for this problem? Yesterday's question: Can I create a BufferedImage from a JPanel without rendering in a JFrame? In the code below, the two labels will overwrite each other in the top left corner of the image. import java.awt.Color; import java

Please have a look at the following code import java.awt.*; import java.awt.event.*; import javax.swing.*; public class TestForm extends JFrame { private JLabel heightLabel, weightLabel, waistLabel, neckLabel, hipsLabel,bfPercentageLabel; private JTextField heightTxt, weightTxt, waistTxt, neckTxt, hipsTxt; private JPanel centerPanel; private JPanel southPanel; private JLabel endTargetWeightLabel; private JLabel endTargetWeightResultLabel; private JLabel fatMustLoseLabel; private JLabel fatMustLoseResultLabel; public TestForm() { //Declaring instance variables heightLabel = new JLabel("Height: